VGRoid support (#27659)

* Dungeon spawn support for grid spawns

* Recursive dungeons working

* Mask approach working

* zack

* More work

* Fix recursive dungeons

* Heap of work

* weh

* the cud

* rar

* Job

* weh

* weh

* weh

* Master merges

* orch

* weh

* vgroid most of the work

* Tweaks

* Tweaks

* weh

* do do do do do do

* Basic layout

* Ore spawning working

* Big breaking changes

* Mob gen working

* weh

* Finalising

* emo

* More finalising

* reverty

* Reduce distance

Content.Shared/Procedural/DungeonRoom.cs

@@ -2,6 +2,7 @@ using System.Numerics;
 
 namespace Content.Shared.Procedural;
 
+// TODO: Cache center and bounds and shit and don't make the caller deal with it.
 public sealed record DungeonRoom(HashSet<Vector2i> Tiles, Vector2 Center, Box2i Bounds, HashSet<Vector2i> Exterior)
 {
     public readonly List<Vector2i> Entrances = new();